How long does number portability take?

Portability follows the legally regulated process — we handle the administration, while the exact timing also depends on the releasing provider.

Does it work with my existing PBX?

Yes, with any SIP-compatible (RFC 3261) PBX — via a registration-based or IP-based trunk.

How do you ensure voice quality?

We carry traffic on our own fiber and microwave backbone in Budapest, with continuous monitoring.

Is there a long-term contract obligation?

Our plans follow your actual traffic — we set out the details in an individual quote.

International call destinations?

Yes, international destinations are available with transparent per-minute rates.

Replace your ISDN lines with SIP trunking — keeping your own numbers

We are not a reseller: Innotel is a registered SIP voice provider at NMHH, with our own number ranges. Flexible channels, number portability, e-fax/SMS and SLA — alongside any PBX.

Why Innotel SIP trunking?

Own NMHH-registered number range — Innotel is not a reseller but a registered electronic communications provider. Numbers come from our own NMHH-registered ranges — a shorter billing chain and a stronger SLA.
Number portability — keep your existing numbers — We port your current ISDN or SIP numbers into the Innotel network; we handle the paperwork and the switch happens without a perceptible pause.
Flexible channel count — ISDN PRI reserves 30 channels whether you use them or not. With SIP trunking, channel count is sized to your actual concurrent call demand, scaling up or down.
E-fax and SMS on your business number — E-fax (fax-to-email / email-to-fax) and SMS send/receive can be added to your existing or new business number — no separate fax line required.
Works with any SIP-compatible PBX — We connect the trunk to your existing Asterisk, Cisco, Avaya, 3CX or any SIP-RFC-compatible PBX — without replacing your PBX.
Transparent pricing and SLA — Monthly package with per-minute or unlimited domestic pricing and a written SLA. No hidden transfer fees; no fixed-term contract required, available on monthly notice.

How it works

1Discovery and quote — We assess your line count, concurrent channel needs, PBX type and number portability requirements, and provide a concrete quote within 24 hours.
2Connection and testing — SIP trunk configuration into your PBX (IP-based or registration mode), call tests, codec negotiation and routing logic.
3Number portability — When bringing existing numbers we handle the porting request; you choose the cutover date and your original numbers stay active throughout.
4Ongoing operations — We monitor trunk quality, handle capacity expansion and e-fax/SMS configuration changes; operational SLA is part of your contract.

Technical specification

Protocol: SIP RFC 3261; IP-based and registration trunk modes
Encryption: SIP/TLS + SRTP (optional, subject to PBX support)
Codecs: G.711a (primary), G.729, G.722 HD
CLI handling: CLIP/CLIR, DID ranges, multi-number trunks
E-fax: T.38 protocol; fax-to-email and email-to-fax
SMS: Two-way SMS (also accessible via API)
Number range: Own NMHH-registered range; Budapest prefix and other DID options
Number portability: From any Hungarian network, full handling included
SLA: Written availability SLA (details in quotation)
Compatibility: Any SIP RFC 3261-compliant PBX: Asterisk, FreePBX, Cisco CUCM, Avaya, 3CX, Yeastar

Pricing

Prices shown are net prices; we provide a custom quote after an assessment.

SIP trunking

Voice service for your existing PBX from our own number ranges, with number portability.

HUF 9,900/ mo

Frequently asked questions

Get a SIP trunk quote within 24 hours — we will show you the real saving vs. ISDN, including number portability, e-fax and SLA.

Request a quote